MOLLY O'DAY,

64, a country singer and banjo picker whose mournful mountain blues style is credited with influencing the sound of modern country music, died of cancer Dec. 5 in Huntington, W.Va.

She was once called by the New York Times one of "the greatest, if not the greatest, woman singer in country music." Singer and actress Dolly Parton once said Miss O'Day's music profoundly influenced the way she sings today. Earl Scruggs, the great bluegrass banjo player, said he stood in awe of her playing and told how she once beat him in a banjo-picking contest.

Miss O'Day recorded 36 songs between 1946 and 1951, including her most famous, a late 1946 recording of "The Tramp on the Street." Among her other recordings were "Teardrops Falling in the Snow," "Don't Sell Daddy Any More Whiskey," and the Hank Williams creation, "The Singing Waterfall." By the early 1950s, she had abandoned music and began working full-time for the Church of God.

YAKOV ZELDOVICH,

73, a Soviet physicist who played a major role in his country's defense industry and who helped develop "black hole" and neutron star theories, died Dec. 2. Tass, the official Soviet news agency, which carried news of his death, did not report its cause or where he died.

At the time of his death, he was head of the theory department of the Soviet Academy of Sciences Institute of Physical Problems. He made an "immense contribution" in such areas as combustion and detonation theory, the physics of explosions and shock waves, nuclear and elementary-particle physics, gravitation and cosmology, astrophysics and astronomy, Tass said.

PERICLE FAZZINI,

74, a noted Italian sculptor whose monumental statue "The Resurrection" is the backdrop for Pope John Paul II's weekly general audiences, and whose other works are "Sybil" at the Museum of Modern Art in New York and a giant sculpture of a seashell commissioned by the city of Dallas, died Dec. 4 in Rome. The cause of death was not reported.

The Vatican commissioned Fazzini to provide a work for its modern auditorium. The result was "The Resurrection," a statue depicting Christ rising from a nuclear bomb crater. Molded in red bronze and yellow brass and measuring 66 feet by 23 feet by 10 feet, it was unveiled in 1977.

FELIX HAUROWITZ,

91, a distinguished professor emeritus of chemistry at Indiana University who made several key discoveries relating to hemoglobin in blood, died Dec. 2 in Bloomington, Ind. The cause of death was not reported.

In 1930, he proposed the template theory, a major theory in immunology describing how the human body's immune system forms antibodies to fight antigens from invading organisms. He also discovered that when hemoglobin binds with oxygen, its hexagonal crystals disintegrate completely and recombine into a different form of crystal.

YEVGENY TOLSTIKOV,

74, a Soviet explorer who led several pioneering expeditions to Arctic and Antarctic regions, died Dec. 4. News of his death, carried by Tass, did not report where he died or the cause of his death.

He gained renown during World War II for his polar flights and later made a number of geographical discoveries in the Arctic and Antarctic. He headed the third Soviet expedition to the Antarctic and trained many other Soviet polar explorers.

GEORGE SEAWRIGHT,

36, who was elected in 1981 to the Belfast City Council where three years later he suggested that the city buy an incinerator and burn all Catholics, died Dec. 3 in Belfast from wounds he received two weeks ago when he was shot by an Irish nationalist gunman.

Mr. Seawright moved to Northern Ireland in 1973 and worked for the Democratic Unionist Party, the hardline Protestant party led by the Rev. Ian Paisley. He was expelled from Paisley's party for refusing to apologize, fined for incitement and spent 15 days in jail until a sympathizer paid his fine.

ROBERT N. HASKELL,

84, board chairman of Bangor Hydro-Electric Co. who was a former Maine State Senate majority leader and president and who served 5 1/2 days in January 1959 as the state's governor, died Dec. 3 in a fire at his home in Bangor.

A Republican, he served between the administrations of Democrats Edmund S. Muskie and Clinton A. Clauson. Muskie resigned on Jan. 2, 1959, to be sworn in as a U.S. senator. As president of the State Senate, Mr. Haskell assumed the governorship until Clauson's inauguration.

DARCY PENTEADO,

61, a leading Brazilian artist noted for his 1970s portraits of such subjects as actress Audrey Hepburn and writer Francoise Sagan, died Dec. 3 at a hospital in Rio de Janeiro. He had acquired immune deficiency syndrome.

Active earlier in his life in the homosexual rights movement, Mr. Penteado helped to found the campaigning newspaper O Lampiao. He was also a book author and illustrator.